When we speak of "authenticity," it matters not what USFA or Uberti or Alfred E. Neuman manufactures. It matters what was done when to what by USG Armorers. We don't necessarily know what was sent back for re-hab when nor why. Ergo, I don't think we can positively state one way or the other. At this point in time, since the gun is a reproduction, does it really matter?? I don't really want to be too flip (you believe that ... right??) but with a reproduction ... ah .. who cares??
coffinmaker
PS: I'm a dry hole for what barrel length was offered on the Nettleton guns by USFA. Original Colt guns, on the other hand, were 7 1/2.